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ActiveSingle Family

$2,950,000

40 Powhatan Pl, San Mateo 94402

Beds4
Baths2
Sqft2,160
DOM8
No Photos Available

AddressIntel AI Briefing

The optimal play is teardown-and-mansionize on this pristine 10,793 sqft lot, allowing for a premium 4,317 sqft new construction. Lacking any hazard blockers and backed by excellent local income levels, this parcel has highly predictable development margins. Eligible SB 9 pathways also leave the door open for multi-unit density.

Property Permit History

No permit history found directly associated with this property's address.

Recent Neighborhood Remodeling (San Mateo)

2026-08-211241 SHAFTER ST SAN MATEO 94402-2901 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$22,000Issued
2026-08-211133 WAYNE WAY SAN MATEO 94403-1564 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$30,000Issued
2026-08-211241 SHAFTER ST SAN MATEO 94402-2901 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$35,000Issued
2026-08-21510 BOREL AVE SAN MATEO 94402-3406 CA
Single Family (Alteration/Repair) - Alter
$28,882Issued
2026-08-202614 ALAMEDA DE LAS PULGAS SAN MATEO 94403-2652 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$7,000Issued
2026-08-20406 AVILA RD SAN MATEO 94402-2822 CA
Single Family (Addition) - Add/Alter
$91,714Issued

Parcel & Zoning Info

APN041152370
Official Lot Sqft10,793
Zoning CodeR-1, S-8
SB 9 StatusEligible · up to 4 units
Unlock Pathways
Ministerial ADU Ministerial SB 9 Builder's Remedy SB 423 Streamlining Density Bonus
Entitlement RiskLow (0/100)

ADU Potential

Feasibility Score98/100
Max ADU Units2 (ADU + JADU)
Est. ADU Size1,200 sqft
Existing Coverage20%

Flag / irregular · Corner lot · ~127 ft frontage × 158 ft deep, a tucked-away rear unit is very private; access is typically via the pole driveway. A second street frontage lets an ADU take its own entrance and address.

Screening heuristic based on lot size, existing coverage, lot orientation, and hazard overlays. CA ADU law is ministerial statewide; verify max size, setbacks, and JADU owner-occupancy with the local planning dept.

Hazard Snapshot

Flood Zone

X
Area of minimal flood hazard.

Fire Severity

Moderate
Elevated fire risk; impacts insurance cost and building materials.

Liquefaction

No
Not in a mapped liquefaction zone.

Fault Zone

No
Not in a mapped Alquist-Priolo fault zone.

Not a substitute for a Natural Hazard Disclosure (NHD) report. Zones reflect available GIS data and may not cover all localities.

Nearby Public Schools

Elementary School

Highlands Elementary

San Mateo-Foster City

0.7 miles away
Middle School

Ralston Intermediate

Belmont-Redwood Shores Elementary

1.7 miles away
High School

Hillcrest at Youth Services Center

San Mateo County Office of Education

0.4 miles away

School boundaries are subject to change. Nearest school distance does not guarantee enrollment eligibility. Check with the local district. Data provided by CDE.

Proprietary Intelligence

Market Heat Index

78/100

Based on recent sales velocity and local demand in 94402.

Flippability Score

75/100

Measures neighborhood renovation density vs. recent permits on this property.

Bidding War Prob.

59%

Likelihood of multiple offers based on local list-to-sale ratios and DOM.

Proforma ROI Calculator

Back-of-the-napkin deal analysis across development strategies.

Median of 12 recent single-family sales in San Mateo (94402): $1,471/sqft. Sized within 25% of the 3,200 sqft build, because smaller houses sell for more per foot and pricing a rebuild off them overstates resale.

Commission, transfer tax and closing. Deducted from resale before profit, so the ROI below is net of the exit rather than gross.

Carry on total capital for the project duration. At 0% the model is a cash purchase; 12 months at a typical construction-loan rate moves ROI by 6 to 10 points on a deal this size, so price it with your real rate.

Hard Costs$1,760,000
New Build3,200 sqft
Total Capital Required$4,885,000
Estimated Resale (ARV)$4,707,200
Cost of Sale (5%)-$235,360
Net Proceeds$4,471,840

Projected Profit

-$413,160
-8.5% ROI

Warning: Project is mathematically underwater.

Recent Comparables (San Mateo 94402)

Sized to the modelled 3,200 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

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